For practice only: You may need to use the appropriateappendix tableto answer this question.

The average price for a gallon of gasoline in thecountry Ais $2.77and incountry Bit is $2.45. Assume these averages are the population means in the two countries and that the probability distributions are normally distributed with a standard deviation of $0.25 in thecountry Aand a standard deviation of $0.20 incountry B.

(a)

What is the probability that a randomly selected gas station incountry Acharges less than $2.50per gallon? (Round your answer to four decimal places.)

(b)

What percentage of the gas stations incountry Bcharge less than $2.50per gallon? (Round your answer to two decimal places.)

%

(c)

What is the probability that a randomly selected gas station incountry Bcharged more than the mean price in thecountry A?(Round your answer to four decimal places.)